cascardo/linux.git
8 years agoMerge ath-next from ath.git
Kalle Valo [Wed, 21 Oct 2015 08:07:55 +0000 (11:07 +0300)]
Merge ath-next from ath.git

Major changes:

ath10k

* add board 2 API support for automatically choosing correct board file
* data path optimisations
* disable PCI power save for qca988x and QCA99x0 due to interop reasons

wil6210

* BlockAckReq support
* firmware crashdump using devcoredump
* capture all frames with sniffer

8 years agobrcm80211: Add support for brcm4371
Eric Caruso [Wed, 14 Oct 2015 19:34:11 +0000 (12:34 -0700)]
brcm80211: Add support for brcm4371

This is a new Broadcom chip and we should be able to recognize it.

Signed-off-by: Eric Caruso <ejcaruso@google.com>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Properly set carrier state of netdev.
Hante Meuleman [Thu, 8 Oct 2015 18:33:21 +0000 (20:33 +0200)]
brcmfmac: Properly set carrier state of netdev.

Use the netif_carrier api to correctly set carrier state on the
different modes.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Remove unused state AP creating.
Hante Meuleman [Thu, 8 Oct 2015 18:33:20 +0000 (20:33 +0200)]
brcmfmac: Remove unused state AP creating.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Move brcmf_c_preinit_dcmds prototype to correct file.
Hante Meuleman [Thu, 8 Oct 2015 18:33:19 +0000 (20:33 +0200)]
brcmfmac: Move brcmf_c_preinit_dcmds prototype to correct file.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Add dump_station support to cfg80221 ops.
Hante Meuleman [Thu, 8 Oct 2015 18:33:18 +0000 (20:33 +0200)]
brcmfmac: Add dump_station support to cfg80221 ops.

With this feature it becomes possible to request a station
assoc list.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Add RSSI information to get_station.
Hante Meuleman [Thu, 8 Oct 2015 18:33:17 +0000 (20:33 +0200)]
brcmfmac: Add RSSI information to get_station.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Fix station info rate information.
Hante Meuleman [Thu, 8 Oct 2015 18:33:16 +0000 (20:33 +0200)]
brcmfmac: Fix station info rate information.

Txrate and rxrate in get_station got assigned first with value
in kbps and then divided by 100 to get it in 100kbps unit. The
problem with that is that type of rate is u16 which resulted
in incorrect values for high data rate values.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Rework p2p attach, use single method for p2p dev creation.
Hante Meuleman [Thu, 8 Oct 2015 18:33:15 +0000 (20:33 +0200)]
brcmfmac: Rework p2p attach, use single method for p2p dev creation.

When module param p2pon is used a p2p device is created at init.
This patch reworks how this is done by using the same method as
for a dynamically (by user space) created p2p device.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: remove conversational comment
Arend van Spriel [Thu, 8 Oct 2015 18:33:14 +0000 (20:33 +0200)]
brcmfmac: remove conversational comment

Removing a comment that was only useful during the review of
the change that introduced it and which should never have been
submitted.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: rename firmware_path to alternative_fw_path
Franky Lin [Thu, 8 Oct 2015 18:33:13 +0000 (20:33 +0200)]
brcmfmac: rename firmware_path to alternative_fw_path

In brcmfmac the module parameter "firmware_path" is used as an
alternative relative path under the search path used by firmware_class
or ueventhelper. Rename the parameter to alternative_fw_path to avoid
confusion.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: Fix race condition between USB probe/load and disconnect.
Hante Meuleman [Thu, 8 Oct 2015 18:33:12 +0000 (20:33 +0200)]
brcmfmac: Fix race condition between USB probe/load and disconnect.

When a USB device gets disconnected due to for example removal
then it is possible that it is still in the loading phase due to
the asynchronous load routines. These routines can then possible
access memory which has been freed. Fix this by mutex locking the
device init phase.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: expose device memory to devcoredump subsystem
Arend van Spriel [Thu, 8 Oct 2015 18:33:11 +0000 (20:33 +0200)]
brcmfmac: expose device memory to devcoredump subsystem

Upon PSM watchdog event received from firmware the driver will obtain
a memory snapshot of the device and expose it to user-space through
the devcoredump framework. This will trigger a uevent.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoNew driver: rtl8xxxu (mac80211)
Jes Sorensen [Thu, 15 Oct 2015 00:44:51 +0000 (20:44 -0400)]
New driver: rtl8xxxu (mac80211)

This is an alternate driver for a number of Realtek WiFi USB devices,
including RTL8723AU, RTL8188CU, RTL8188RU, RTL8191CU, and RTL8192CU.
It was written from scratch utilizing the Linux mac80211 stack.

After spending months cleaning up the vendor provided rtl8723au
driver, which comes with it's own 802.11 stack included, I decided to
rewrite this driver from the bottom up.

Many thanks to Johannes Berg for 802.11 insights and help and Larry
Finger for help with the vendor driver.

The full git log for the development of this driver can be found here:
git git://git.kernel.org/pub/scm/linux/kernel/git/jes/linux.git
    branch rtl8723au-mac80211

This driver is still under development, but has proven to be very
stable for me. It currently supports station mode only. It has support
for OFDM and CCK rates. It does lack certain features found in the
staging driver, such as power management, AMPDU, and 40MHz channel
support. In addition it does not support AD-HOC, AP, and monitor mode
support at this point.

The driver is known to work with the following devices:
Lenovo Yoga (rtl8723au)
TP-Link TL-WN823N (rtl8192cu)
Etekcity 6R (rtl8188cu)
Daffodil LAN03 (rtl8188cu)
Alfa AWUS036NHR (rtl8188ru)

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoath10k: make fw stats prints specific to firmware version
Manikanta Pubbisetty [Fri, 16 Oct 2015 12:54:52 +0000 (15:54 +0300)]
ath10k: make fw stats prints specific to firmware version

The patch makes debug stats prints fw specific by adding a new member
in wmi_ops. That way it's easier to add fw_stats support to 10.4 firmware.

Signed-off-by: Manikanta Pubbisetty <c_mpubbi@qti.qualcomm.com>
Signed-off-by: Tamizh Chelvam <c_traja@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: disable PCI PS for QCA988X and QCA99X0
Anilkumar Kolli [Fri, 16 Oct 2015 12:54:51 +0000 (15:54 +0300)]
ath10k: disable PCI PS for QCA988X and QCA99X0

This patch disables PCI PS for QCA988X and QCA99X0, Since PCI PS is
validated for QCA6174, let it be enabled only for QCA6174. It would be
better to execute PCI PS related functions only for the supported devices.

PCI time out issue is observed with QCA99X0 on x86 platform, We will
disable PCI PS for QCA988X and QCA99X0 until PCI PS is properly implemented.

Taking and releasing ps_lock is causing higher CPU consumption. Michal Kazior
suggested ps_lock overhead to be reworked so that ath10k_pci_wake/sleep
functions are called less often, i.e. move the powersave logic up (only during
irq handling, tx path, submitting fw commands) but that's a bigger change and
can be implemented later.

Signed-off-by: Anilkumar Kolli <akolli@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove htc polling for tx completion
Rajkumar Manoharan [Mon, 12 Oct 2015 12:57:06 +0000 (18:27 +0530)]
ath10k: remove htc polling for tx completion

Since polling for tx completion is handled whenever target to host
messages are received, removing the unnecessary polling mechanism for
send completion at HTC level.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove unused dl_is_polled
Rajkumar Manoharan [Mon, 12 Oct 2015 12:57:05 +0000 (18:27 +0530)]
ath10k: remove unused dl_is_polled

Since polling for received messages not supported, remove unused
dl_is_polled.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: configure copy engine 5 for HTT messages
Rajkumar Manoharan [Mon, 12 Oct 2015 12:57:04 +0000 (18:27 +0530)]
ath10k: configure copy engine 5 for HTT messages

Currently target to host (T2H) HTT messages are received at copy engine 1.
These messages are processed by HTC layer in both host and target.
To avoid HTC level processing overhead in both host and target,
the unused copy engine 5 is being used for receiving HTT T2H messages.
This will speedup the receive data processing as well as htt tx completion.
Hence host and target copy engine configuration tables are updated
to enable CE5 pipe. The in-direction HTT mapping is now pointing to CE5
for all HTT T2H.

Moreover HTT send completion messages are polled from HTC handler
as CE 4 is not interrupt-driven. For faster tx completion, CE4 polling
needs to be done whenever CE pipe which transports HTT Rx (target->host)
is processed. This avoids overhead of polling HTT messages from HTC
layer. Servicing CE 4 faster is helping to solve "failed to transmit
packet, dropping: -105".

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: export htt tx rx handlers
Rajkumar Manoharan [Mon, 12 Oct 2015 12:57:03 +0000 (18:27 +0530)]
ath10k: export htt tx rx handlers

Some special copy engines delivers messages directly to HTT by
bypassing HTC layer. Hence exporting tx_completion and rx_handler
for delivering the data to HTT layer.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: register per copy engine receive callbacks
Rajkumar Manoharan [Mon, 12 Oct 2015 12:57:02 +0000 (18:27 +0530)]
ath10k: register per copy engine receive callbacks

Register receive callbacks for every copy engines (CE) separately
instead of having common receive handler. Some of the copy engines
receives different type of messages (i.e HTT/HTC/pktlog) from target.
Hence to service them accordingly, register per copy engine receive
callbacks.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: register per copy engine send completion callbacks
Rajkumar Manoharan [Mon, 12 Oct 2015 12:57:01 +0000 (18:27 +0530)]
ath10k: register per copy engine send completion callbacks

Register send completion callbacks for every copy engines (CE) separately
instead of having common completion handler. Since some of the copy
engines delivers different type of messages, per-CE callbacks help to
service them differently.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: export htc tx rx handlers
Rajkumar Manoharan [Mon, 12 Oct 2015 12:57:00 +0000 (18:27 +0530)]
ath10k: export htc tx rx handlers

Export HTC layer tx and rx handlers. This will be used by HIF layer
for per-CE data processing. Instead of callback mechanism, HIF will
call appropriate upper layers API directly.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agomwifiex: remove unnecessary NULL check
Xinming Hu [Fri, 9 Oct 2015 11:26:35 +0000 (04:26 -0700)]
mwifiex: remove unnecessary NULL check

ra_list cannot be NULL here, so remove the unnecessary NULL check.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: add ndo_validate_addr netdev ops
Amitkumar Karwar [Fri, 9 Oct 2015 11:26:34 +0000 (04:26 -0700)]
mwifiex: add ndo_validate_addr netdev ops

ndo_validate_addr is set to generic eth_validate_addr() function
used for MAC address validation.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix AP VHT behaviour
Ganapathi Bhat [Fri, 9 Oct 2015 11:26:33 +0000 (04:26 -0700)]
mwifiex: fix AP VHT behaviour

Even if hostapd configuration file contains VHT parameters,
they were not getting reflected in beacons. The reason is
we are resetting them before starting AP. This patch removes
redundant BSS_STOP and SYS_RESET firmware commands before
starting AP to fix the problem.

Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: control WLAN and bluetooth coexistence modes
Amitkumar Karwar [Fri, 9 Oct 2015 11:26:23 +0000 (04:26 -0700)]
mwifiex: control WLAN and bluetooth coexistence modes

By default our chip will be in spatial coexistence mode.
This patch adds a provision to change it to timeshare mode
via debugfs command.

Enable timeshare coexistence mode
   echo 1 > /sys/kernel/debug/mwifiex/mlan0/timeshare_coex

Go back to spacial coexistence mode
   echo 0 > /sys/kernel/debug/mwifiex/mlan0/timeshare_coex

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix a comment typo
Geliang Tang [Sun, 4 Oct 2015 08:46:55 +0000 (16:46 +0800)]
mwifiex: fix a comment typo

Just fix a typo in the code comment.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Acked-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoath9k: fix QCA9561 XLNA rxgain initial
Miaoqing Pan [Tue, 29 Sep 2015 05:24:37 +0000 (13:24 +0800)]
ath9k: fix QCA9561 XLNA rxgain initial

A small bugfix for commit ede6a5e7b859 ("ath9k: Add QCA956x HW support").
I guess I would have skipped renaming (that initial QCA956x commit has
been there already for almost a year with the "5g" in the name) and move
the call outside AR_SREV_9462_20_OR_LATER() to make it reachable.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoath9k: rename ini_modes_rxgain_5g_xlna to ini_modes_rxgain_xlna
Miaoqing Pan [Tue, 29 Sep 2015 05:24:36 +0000 (13:24 +0800)]
ath9k: rename ini_modes_rxgain_5g_xlna to ini_modes_rxgain_xlna

rename the variable as preparation for using the array with 2.4 GHz
band, etc.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8192cu: Add missing case in rtl92cu_get_hw_reg
Priit Laes [Tue, 15 Sep 2015 06:01:56 +0000 (09:01 +0300)]
rtlwifi: rtl8192cu: Add missing case in rtl92cu_get_hw_reg

Driver was reporting 'switch case not processed' after association,
so HW_VAR_KEEP_ALIVE was added and filled similarily to other drivers.

Positive side effect to this seems to be a bit more stable connection.

Signed-off-by: Priit Laes <plaes@plaes.org>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: correction in USB8997 chipset's product ID
Amitkumar Karwar [Thu, 10 Sep 2015 14:27:34 +0000 (07:27 -0700)]
mwifiex: correction in USB8997 chipset's product ID

For 8897 chipset, mwifiex_usb unnecessarily used to
come into picture when wlan is supposed to be used
via PCIe interface and USB interface is for
bluetooth.

This problem has been resolved for newer chipset by
having separate USB product ids for USB-USB8997 and
PCIe-USB8997 chipset variants. This patch ensures to
use wlan specific product id.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: remove USB8897 chipset support
Amitkumar Karwar [Thu, 10 Sep 2015 14:27:33 +0000 (07:27 -0700)]
mwifiex: remove USB8897 chipset support

We don't have any customer using this chipset via USB
interface. if both mwifiex_pcie and mwifiex_usb modules
are enabled by user, sometimes mwifiex_usb wins the race
even if user wants wlan interface to be on PCIe and
USB for bluetooth. This patch solves the problem.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoath9k: Fix NF CCA limits for AR9287 and AR9227
Martin Blumenstingl [Wed, 22 Jul 2015 08:42:43 +0000 (10:42 +0200)]
ath9k: Fix NF CCA limits for AR9287 and AR9227

The FreeBSD driver [0] uses the same 2G values as for the AR9280 chips.
Using the same values in ath9k results in much better throughput for me.

Before this patch I had a huge amount of packet loss (sometimes up to
40%) and the max transfer speed was somewhere around 5Mbit/s. With this
patch applied I have zero packet loss and ten times the throughput.
My device uses a AR9227 which is the PCI variant of the AR9287.

[0] http://bxr.su/FreeBSD/sys/dev/ath/ath_hal/ar9002/ar9287.h

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl818x: Move drivers into new realtek directory
Larry Finger [Mon, 7 Sep 2015 20:59:16 +0000 (15:59 -0500)]
rtlwifi: rtl818x: Move drivers into new realtek directory

Now that a new mac80211-based driver for Realtek devices has been submitted,
it is time to reorganize the directories. Rather than having directories
rtlwifi and rtl818x be in drivers/net/wireless/, they will now be in
drivers/net/wireless/realtek/. This change simplifies the directory
structure, but does not result in any configuration changes that are
visable to the user.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoath10k: cleanup ath10k_mac_register() error handling
Jeff Johnson [Thu, 8 Oct 2015 16:15:53 +0000 (09:15 -0700)]
ath10k: cleanup ath10k_mac_register() error handling

The logic in the error-handling path of ath10k_mac_register() is
divergent from the logic in ath10k_mac_unregister().  Update the
ath10k_mac_register() error handling logic to align with the
ath10k_mac_unregister() logic.

Signed-off-by: Jeff Johnson <jjohnson@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix cleanup in ath10k_thermal_unregister
Mohammed Shafi Shajakhan [Thu, 8 Oct 2015 10:33:03 +0000 (16:03 +0530)]
ath10k: fix cleanup in ath10k_thermal_unregister

First remove the 'cooling_device#n' syslink created
for ath10k and then unregsiter from the thermal subsystem(cooling)

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: select board data based on BMI chip id and board id
Manikanta Pubbisetty [Fri, 9 Oct 2015 08:55:59 +0000 (11:55 +0300)]
ath10k: select board data based on BMI chip id and board id

QCA99X0 uses radio specific board names based on chip id and
board id combinations. We get these IDs from the target using BMI after otp.bin
has been started.

This patch reorders the call to the function ath10k_core_fetch_board_file
so that we have OTP binary before requesting for boardid-chipid. We get this
OTP data after parsing firmware-N.bin.

[kvalo@qca.qualcomm.com: try BMI_PARAM_GET_EEPROM_BOARD_ID with
 all boards and detect if command is not supported]
Signed-off-by: Manikanta Pubbisetty <c_mpubbi@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: add board 2 API support
Manikanta Pubbisetty [Fri, 9 Oct 2015 08:55:58 +0000 (11:55 +0300)]
ath10k: add board 2 API support

QCA6174 needs different board files based on board type. To make it easier to
distribute multiple board files and automatically choose correct board file
create a simple TLV file format following the same principles as with FW IEs.
The file is named board-2.bin and contain multiple board files. Each board file
then can have multiple names.

ath10k searches for file board-N.bin (where N is the interface version number
for the board file, just like we for firmware files) in /lib/firmware/*, for
example for qca99x0 it will try to find it here:

/lib/firmware/ath10k/QCA99X0/hw2.0/board-2.bin

If ath10k doesn't find board-2.bin then it will fallback to the old board.bin file.

This patch adds a simple name scheme using pci device id which for now will be
used by qca6174:

bus=%s,vendor=%04x,device=%04x,subsystem-vendor=%04x,subsystem-device=%04x

This removes the old method of having subsystem ids in ar->spec_board_id and
using that in the board file name.

Signed-off-by: Manikanta Pubbisetty <c_mpubbi@qti.qualcomm.com>
[kvalo@qca.qualcomm.com: simplified the file format, rewrote commit log, other smaller changes]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agobridge: vlan: enforce no pvid flag in vlan ranges
Nikolay Aleksandrov [Sun, 11 Oct 2015 10:49:56 +0000 (12:49 +0200)]
bridge: vlan: enforce no pvid flag in vlan ranges

Currently it's possible for someone to send a vlan range to the kernel
with the pvid flag set which will result in the pvid bouncing from a
vlan to vlan and isn't correct, it also introduces problems for hardware
where it doesn't make sense having more than 1 pvid. iproute2 already
enforces this, so let's enforce it on kernel-side as well.

Reported-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoatm: iphase: fix misleading indention
Tillmann Heidsieck [Sat, 10 Oct 2015 19:47:19 +0000 (21:47 +0200)]
atm: iphase: fix misleading indention

Fix a smatch warning:
drivers/atm/iphase.c:1178 rx_pkt() warn: curly braces intended?

The code is correct, the indention is misleading. In case the allocation
of skb fails, we want to skip to the end.

Signed-off-by: Tillmann Heidsieck <theidsieck@leenox.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoatm: iphase: return -ENOMEM instead of -1 in case of failed kmalloc()
Tillmann Heidsieck [Sat, 10 Oct 2015 19:47:18 +0000 (21:47 +0200)]
atm: iphase: return -ENOMEM instead of -1 in case of failed kmalloc()

Smatch complains about returning hard coded error codes, silence this
warning.

drivers/atm/iphase.c:115 ia_enque_rtn_q() warn: returning -1 instead of -ENOMEM is sloppy

Signed-off-by: Tillmann Heidsieck <theidsieck@leenox.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipv6 route: use err pointers instead of returning pointer by reference
Roopa Prabhu [Sat, 10 Oct 2015 15:26:36 +0000 (08:26 -0700)]
ipv6 route: use err pointers instead of returning pointer by reference

This patch makes ip6_route_info_create return err pointer instead of
returning the rt pointer by reference as suggested  by Dave

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: hns: fix the unknown phy_nterface_t type error
huangdaode [Sat, 10 Oct 2015 09:20:38 +0000 (17:20 +0800)]
net: hns: fix the unknown phy_nterface_t type error

This patch fix the building error reported by Jiri Pirko <jiri@resnulli.us>

drivers/net/ethernet/hisilicon/hns/hnae.h:465:2: error: unknown type
name 'phy_interface_t'
        phy_interface_t phy_if;
^
the full build log is on https://lists.01.org/pipermail/kbuild-all.

Signed-off-by: huangdaode <huangdaode@hisilicon.com>
Signed-off-by: yankejian <yankejian@huawei.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotun: use sk_fullsock() before reading sk->sk_tsflags
Eric Dumazet [Fri, 9 Oct 2015 22:42:21 +0000 (15:42 -0700)]
tun: use sk_fullsock() before reading sk->sk_tsflags

timewait or request sockets are small and do not contain sk->sk_tsflags

Without this fix, we might read garbage, and crash later in

__skb_complete_tx_timestamp()
 -> sock_queue_err_skb()

(These pseudo sockets do not have an error queue either)

Fixes: ca6fb0651883 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'netns-defrag'
David S. Miller [Tue, 13 Oct 2015 02:44:22 +0000 (19:44 -0700)]
Merge branch 'netns-defrag'

Eric W. Biederman says:

====================
net: Pass net into defragmentation

This is the next installment of my work to pass struct net through the
output path so the code does not need to guess how to figure out which
network namespace it is in, and ultimately routes can have output
devices in another network namespace.

In netfilter and af_packet we defragment packets in the output path,
and there is the usual amount of confusion about how to compute which
net we are processing the packets in.  This patchset clears that
confusion up by explicitly passing in struct net in ip_defrag,
ip_check_defrag, and nf_ct_frag6_gather.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipv6: Pass struct net into nf_ct_frag6_gather
Eric W. Biederman [Fri, 9 Oct 2015 18:44:55 +0000 (13:44 -0500)]
ipv6: Pass struct net into nf_ct_frag6_gather

The function nf_ct_frag6_gather is called on both the input and the
output paths of the networking stack.  In particular ipv6_defrag which
calls nf_ct_frag6_gather is called from both the the PRE_ROUTING chain
on input and the LOCAL_OUT chain on output.

The addition of a net parameter makes it explicit which network
namespace the packets are being reassembled in, and removes the need
for nf_ct_frag6_gather to guess.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipv4: Pass struct net into ip_defrag and ip_check_defrag
Eric W. Biederman [Fri, 9 Oct 2015 18:44:54 +0000 (13:44 -0500)]
ipv4: Pass struct net into ip_defrag and ip_check_defrag

The function ip_defrag is called on both the input and the output
paths of the networking stack.  In particular conntrack when it is
tracking outbound packets from the local machine calls ip_defrag.

So add a struct net parameter and stop making ip_defrag guess which
network namespace it needs to defragment packets in.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipv4: Only compute net once in ip_call_ra_chain
Eric W. Biederman [Fri, 9 Oct 2015 18:44:53 +0000 (13:44 -0500)]
ipv4: Only compute net once in ip_call_ra_chain

ip_call_ra_chain is called early in the forwarding chain from
ip_forward and ip_mr_input, which makes skb->dev the correct
expression to get the input network device and dev_net(skb->dev) a
correct expression for the network namespace the packet is being
processed in.

Compute the network namespace and store it in a variable to make the
code clearer.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agopacket: fix match_fanout_group()
Eric Dumazet [Fri, 9 Oct 2015 18:29:32 +0000 (11:29 -0700)]
packet: fix match_fanout_group()

Recent TCP listener patches exposed a prior af_packet bug :
match_fanout_group() blindly assumes it is always safe
to cast sk to a packet socket to compare fanout with af_packet_priv

But SYNACK packets can be sent while attached to request_sock, which
are smaller than a "struct sock".

We can read non existent memory and crash.

Fixes: c0de08d04215 ("af_packet: don't emit packet on orig fanout group")
Fixes: ca6fb0651883 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Eric Leblond <eric@regit.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'wireless-drivers-next-for-davem-2015-10-09' of git://git.kernel.org/pub...
David S. Miller [Tue, 13 Oct 2015 02:39:18 +0000 (19:39 -0700)]
Merge tag 'wireless-drivers-next-for-davem-2015-10-09' of git://git./linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
Major changes:

iwlwifi

* some debugfs improvements
* fix signedness in beacon statistics
* deinline some functions to reduce size when device tracing is enabled
* filter beacons out in AP mode when no stations are associated
* deprecate firmwares version -12
* fix a runtime PM vs. legacy suspend race
* one-liner fix for a ToF bug
* clean-ups in the rx code
* small debugging improvement
* fix WoWLAN with new firmware versions
* more clean-ups towards multiple RX queues;
* some rate scaling fixes and improvements;
* some time-of-flight fixes;
* other generic improvements and clean-ups;

brcmfmac

* rework code dealing with multiple interfaces
* allow logging firmware console using debug level
* support for BCM4350, BCM4365, and BCM4366 PCIE devices
* fixed for legacy P2P and P2P device handling
* correct set and get tx-power

ath9k

* add support for Outside Context of a BSS (OCB) mode

mwifiex

* add USB multichannel feature
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipv4/icmp: redirect messages can use the ingress daddr as source
Paolo Abeni [Fri, 9 Oct 2015 12:34:31 +0000 (14:34 +0200)]
ipv4/icmp: redirect messages can use the ingress daddr as source

This patch allows configuring how the source address of ICMP
redirect messages is selected; by default the old behaviour is
retained, while setting icmp_redirects_use_orig_daddr force the
usage of the destination address of the packet that caused the
redirect.

The new behaviour fits closely the RFC 5798 section 8.1.1, and fix the
following scenario:

Two machines are set up with VRRP to act as routers out of a subnet,
they have IPs x.x.x.1/24 and x.x.x.2/24, with VRRP holding on to
x.x.x.254/24.

If a host in said subnet needs to get an ICMP redirect from the VRRP
router, i.e. to reach a destination behind a different gateway, the
source IP in the ICMP redirect is chosen as the primary IP on the
interface that the packet arrived at, i.e. x.x.x.1 or x.x.x.2.

The host will then ignore said redirect, due to RFC 1122 section 3.2.2.2,
and will continue to use the wrong next-op.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobridge: try switchdev op first in __vlan_vid_add/del
Jiri Pirko [Fri, 9 Oct 2015 11:54:11 +0000 (13:54 +0200)]
bridge: try switchdev op first in __vlan_vid_add/del

Some drivers need to implement both switchdev vlan ops and
vid_add/kill ndos. For that to work in bridge code, we need to try
switchdev op first when adding/deleting vlan id.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoBNX2: free temp_stats_blk on error path
wangweidong [Tue, 13 Oct 2015 02:05:19 +0000 (10:05 +0800)]
BNX2: free temp_stats_blk on error path

In bnx2_init_board, missing free temp_stats_blk on error path when
some operations do failed. Just add the 'kfree' operation.

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'setsockopt_incoming_cpu'
David S. Miller [Tue, 13 Oct 2015 02:28:32 +0000 (19:28 -0700)]
Merge branch 'setsockopt_incoming_cpu'

Eric Dumazet says:

====================
tcp: better smp listener behavior

As promised in last patch series, we implement a better SO_REUSEPORT
strategy, based on cpu hints if given by the application.

We also moved sk_refcnt out of the cache line containing the lookup
keys, as it was considerably slowing down smp operations because
of false sharing. This was simpler than converting listen sockets
to conventional RCU (to avoid sk_refcnt dirtying)

Could process 6.0 Mpps SYN instead of 4.2 Mpps on my test server.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotcp: shrink tcp_timewait_sock by 8 bytes
Eric Dumazet [Fri, 9 Oct 2015 02:33:24 +0000 (19:33 -0700)]
tcp: shrink tcp_timewait_sock by 8 bytes

Reducing tcp_timewait_sock from 280 bytes to 272 bytes
allows SLAB to pack 15 objects per page instead of 14 (on x86)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: shrink struct sock and request_sock by 8 bytes
Eric Dumazet [Fri, 9 Oct 2015 02:33:23 +0000 (19:33 -0700)]
net: shrink struct sock and request_sock by 8 bytes

One 32bit hole is following skc_refcnt, use it.
skc_incoming_cpu can also be an union for request_sock rcv_wnd.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: align sk_refcnt on 128 bytes boundary
Eric Dumazet [Fri, 9 Oct 2015 02:33:22 +0000 (19:33 -0700)]
net: align sk_refcnt on 128 bytes boundary

sk->sk_refcnt is dirtied for every TCP/UDP incoming packet.
This is a performance issue if multiple cpus hit a common socket,
or multiple sockets are chained due to SO_REUSEPORT.

By moving sk_refcnt 8 bytes further, first 128 bytes of sockets
are mostly read. As they contain the lookup keys, this has
a considerable performance impact, as cpus can cache them.

These 8 bytes are not wasted, we use them as a place holder
for various fields, depending on the socket type.

Tested:
 SYN flood hitting a 16 RX queues NIC.
 TCP listener using 16 sockets and SO_REUSEPORT
 and SO_INCOMING_CPU for proper siloing.

 Could process 6.0 Mpps SYN instead of 4.2 Mpps

 Kernel profile looked like :
    11.68%  [kernel]  [k] sha_transform
     6.51%  [kernel]  [k] __inet_lookup_listener
     5.07%  [kernel]  [k] __inet_lookup_established
     4.15%  [kernel]  [k] memcpy_erms
     3.46%  [kernel]  [k] ipt_do_table
     2.74%  [kernel]  [k] fib_table_lookup
     2.54%  [kernel]  [k] tcp_make_synack
     2.34%  [kernel]  [k] tcp_conn_request
     2.05%  [kernel]  [k] __netif_receive_skb_core
     2.03%  [kernel]  [k] kmem_cache_alloc

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: SO_INCOMING_CPU setsockopt() support
Eric Dumazet [Fri, 9 Oct 2015 02:33:21 +0000 (19:33 -0700)]
net: SO_INCOMING_CPU setsockopt() support

SO_INCOMING_CPU as added in commit 2c8c56e15df3 was a getsockopt() command
to fetch incoming cpu handling a particular TCP flow after accept()

This commits adds setsockopt() support and extends SO_REUSEPORT selection
logic : If a TCP listener or UDP socket has this option set, a packet is
delivered to this socket only if CPU handling the packet matches the specified
one.

This allows to build very efficient TCP servers, using one listener per
RX queue, as the associated TCP listener should only accept flows handled
in softirq by the same cpu.
This provides optimal NUMA behavior and keep cpu caches hot.

Note that __inet_lookup_listener() still has to iterate over the list of
all listeners. Following patch puts sk_refcnt in a different cache line
to let this iteration hit only shared and read mostly cache lines.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agopacket: support per-packet fwmark for af_packet sendmsg
Edward Jee [Thu, 8 Oct 2015 21:56:49 +0000 (14:56 -0700)]
packet: support per-packet fwmark for af_packet sendmsg

Signed-off-by: Edward Hyunkoo Jee <edjee@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosock: support per-packet fwmark
Edward Jee [Thu, 8 Oct 2015 21:56:48 +0000 (14:56 -0700)]
sock: support per-packet fwmark

It's useful to allow users to set fwmark for an individual packet,
without changing the socket state. The function this patch adds in
sock layer can be used by the protocols that need such a feature.

Signed-off-by: Edward Hyunkoo Jee <edjee@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'bpf-unprivileged'
David S. Miller [Tue, 13 Oct 2015 02:13:41 +0000 (19:13 -0700)]
Merge branch 'bpf-unprivileged'

Alexei Starovoitov says:

====================
bpf: unprivileged

v1-v2:
- this set logically depends on cb patch
  "bpf: fix cb access in socket filter programs":
  http://patchwork.ozlabs.org/patch/527391/
  which is must have to allow unprivileged programs.
  Thanks Daniel for finding that issue.
- refactored sysctl to be similar to 'modules_disabled'
- dropped bpf_trace_printk
- split tests into separate patch and added more tests
  based on discussion

v1 cover letter:
I think it is time to liberate eBPF from CAP_SYS_ADMIN.
As was discussed when eBPF was first introduced two years ago
the only piece missing in eBPF verifier is 'pointer leak detection'
to make it available to non-root users.
Patch 1 adds this pointer analysis.
The eBPF programs, obviously, need to see and operate on kernel addresses,
but with these extra checks they won't be able to pass these addresses
to user space.
Patch 2 adds accounting of kernel memory used by programs and maps.
It changes behavoir for existing root users, but I think it needs
to be done consistently for both root and non-root, since today
programs and maps are only limited by number of open FDs (RLIMIT_NOFILE).
Patch 2 accounts program's and map's kernel memory as RLIMIT_MEMLOCK.

Unprivileged eBPF is only meaningful for 'socket filter'-like programs.
eBPF programs for tracing and TC classifiers/actions will stay root only.

In parallel the bpf fuzzing effort is ongoing and so far
we've found only one verifier bug and that was already fixed.
The 'constant blinding' pass also being worked on.
It will obfuscate constant-like values that are part of eBPF ISA
to make jit spraying attacks even harder.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: add unprivileged bpf tests
Alexei Starovoitov [Thu, 8 Oct 2015 05:23:23 +0000 (22:23 -0700)]
bpf: add unprivileged bpf tests

Add new tests samples/bpf/test_verifier:

unpriv: return pointer
  checks that pointer cannot be returned from the eBPF program

unpriv: add const to pointer
unpriv: add pointer to pointer
unpriv: neg pointer
  checks that pointer arithmetic is disallowed

unpriv: cmp pointer with const
unpriv: cmp pointer with pointer
  checks that comparison of pointers is disallowed
  Only one case allowed 'void *value = bpf_map_lookup_elem(..); if (value == 0) ...'

unpriv: check that printk is disallowed
  since bpf_trace_printk is not available to unprivileged

unpriv: pass pointer to helper function
  checks that pointers cannot be passed to functions that expect integers
  If function expects a pointer the verifier allows only that type of pointer.
  Like 1st argument of bpf_map_lookup_elem() must be pointer to map.
  (applies to non-root as well)

unpriv: indirectly pass pointer on stack to helper function
  checks that pointer stored into stack cannot be used as part of key
  passed into bpf_map_lookup_elem()

unpriv: mangle pointer on stack 1
unpriv: mangle pointer on stack 2
  checks that writing into stack slot that already contains a pointer
  is disallowed

unpriv: read pointer from stack in small chunks
  checks that < 8 byte read from stack slot that contains a pointer is
  disallowed

unpriv: write pointer into ctx
  checks that storing pointers into skb->fields is disallowed

unpriv: write pointer into map elem value
  checks that storing pointers into element values is disallowed
  For example:
  int bpf_prog(struct __sk_buff *skb)
  {
    u32 key = 0;
    u64 *value = bpf_map_lookup_elem(&map, &key);
    if (value)
       *value = (u64) skb;
  }
  will be rejected.

unpriv: partial copy of pointer
  checks that doing 32-bit register mov from register containing
  a pointer is disallowed

unpriv: pass pointer to tail_call
  checks that passing pointer as an index into bpf_tail_call
  is disallowed

unpriv: cmp map pointer with zero
  checks that comparing map pointer with constant is disallowed

unpriv: write into frame pointer
  checks that frame pointer is read-only (applies to root too)

unpriv: cmp of frame pointer
  checks that R10 cannot be using in comparison

unpriv: cmp of stack pointer
  checks that Rx = R10 - imm is ok, but comparing Rx is not

unpriv: obfuscate stack pointer
  checks that Rx = R10 - imm is ok, but Rx -= imm is not

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: charge user for creation of BPF maps and programs
Alexei Starovoitov [Thu, 8 Oct 2015 05:23:22 +0000 (22:23 -0700)]
bpf: charge user for creation of BPF maps and programs

since eBPF programs and maps use kernel memory consider it 'locked' memory
from user accounting point of view and charge it against RLIMIT_MEMLOCK limit.
This limit is typically set to 64Kbytes by distros, so almost all
bpf+tracing programs would need to increase it, since they use maps,
but kernel charges maximum map size upfront.
For example the hash map of 1024 elements will be charged as 64Kbyte.
It's inconvenient for current users and changes current behavior for root,
but probably worth doing to be consistent root vs non-root.

Similar accounting logic is done by mmap of perf_event.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: enable non-root eBPF programs
Alexei Starovoitov [Thu, 8 Oct 2015 05:23:21 +0000 (22:23 -0700)]
bpf: enable non-root eBPF programs

In order to let unprivileged users load and execute eBPF programs
teach verifier to prevent pointer leaks.
Verifier will prevent
- any arithmetic on pointers
  (except R10+Imm which is used to compute stack addresses)
- comparison of pointers
  (except if (map_value_ptr == 0) ... )
- passing pointers to helper functions
- indirectly passing pointers in stack to helper functions
- returning pointer from bpf program
- storing pointers into ctx or maps

Spill/fill of pointers into stack is allowed, but mangling
of pointers stored in the stack or reading them byte by byte is not.

Within bpf programs the pointers do exist, since programs need to
be able to access maps, pass skb pointer to LD_ABS insns, etc
but programs cannot pass such pointer values to the outside
or obfuscate them.

Only allow BPF_PROG_TYPE_SOCKET_FILTER unprivileged programs,
so that socket filters (tcpdump), af_packet (quic acceleration)
and future kcm can use it.
tracing and tc cls/act program types still require root permissions,
since tracing actually needs to be able to see all kernel pointers
and tc is for root only.

For example, the following unprivileged socket filter program is allowed:
int bpf_prog1(struct __sk_buff *skb)
{
  u32 index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol));
  u64 *value = bpf_map_lookup_elem(&my_map, &index);

  if (value)
*value += skb->len;
  return 0;
}

but the following program is not:
int bpf_prog1(struct __sk_buff *skb)
{
  u32 index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol));
  u64 *value = bpf_map_lookup_elem(&my_map, &index);

  if (value)
*value += (u64) skb;
  return 0;
}
since it would leak the kernel address into the map.

Unprivileged socket filter bpf programs have access to the
following helper functions:
- map lookup/update/delete (but they cannot store kernel pointers into them)
- get_random (it's already exposed to unprivileged user space)
- get_smp_processor_id
- tail_call into another socket filter program
- ktime_get_ns

The feature is controlled by sysctl kernel.unprivileged_bpf_disabled.
This toggle defaults to off (0), but can be set true (1).  Once true,
bpf programs and maps cannot be accessed from unprivileged process,
and the toggle cannot be set back to false.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: HNS: fix MDIO dependencies
Arnd Bergmann [Fri, 9 Oct 2015 12:53:54 +0000 (14:53 +0200)]
net: HNS: fix MDIO dependencies

The newly introduced HNS_MDIO Kconfig symbol selects 'MDIO', but
that is the wrong symbol as the code used by this driver is
provided by PHYLIB rather than the MDIO driver. Also, there is
no need to make this driver user selectable, because it is already
selected by all drivers that need it.

This changes the Kconfig file to select the correct library, and
to make the option silent.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 5b904d39406 ("net: add Hisilicon Network Subsystem MDIO support")
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosfc: fully reset if MC_REBOOT event received without warm_boot_count increment
Daniel Pieczko [Fri, 9 Oct 2015 09:40:35 +0000 (10:40 +0100)]
sfc: fully reset if MC_REBOOT event received without warm_boot_count increment

On EF10, MC_CMD_VPORT_RECONFIGURE can cause a CODE_MC_REBOOT event
to be sent to a function without incrementing the (adapter-wide)
warm_boot_count.  In this case, the reboot is not detected by the
loop on efx_mcdi_poll_reboot(), so prepare for recovery from an MC
reboot anyway.  When this codepath is run, the MC has always just
rebooted, so this recovery is valid.

The loop on efx_mcdi_poll_reboot() is still required for other MC
reboot cases, so that actions in response to an MC reboot are
performed, such as clearing locally calculated statistics.
Siena NICs are unaffected by this change as the above scenario
does not apply.

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'switchdev_ageing_time'
David S. Miller [Mon, 12 Oct 2015 12:20:28 +0000 (05:20 -0700)]
Merge branch 'switchdev_ageing_time'

Scott Feldman says:

====================
switchdev: push bridge ageing_time attribute down

Push bridge-level attributes down to switchdev drivers.  This patchset
adds the infrastructure and then pushes, as an example, ageing_time attribute
down from bridge to switchdev (rocker) driver.  Add some range-checking
for ageing_time.

RTNETLINK answers: Numerical result out of range

Up until now, switchdev attrs where port-level attrs, so the netdev used in
switchdev_attr_set() would be a switch port or bond of switch ports.  With
bridge-level attrs, the netdev passed to switchdev_attr_set() is the bridge
netdev.  The same recusive algo is used to visit the leaves of the stacked
drivers to set the attr, it's just in this case we start one layer higher in
the stack.  One note is not all ports in the bridge may support setting a
bridge-level attribute, so rather than failing the entire set, we'll skip over
those ports returning -EOPNOTSUPP.

v2->v3: Per Jiri review: push only ageing_time attr down at this time, and
don't pass raw bridge IFLA_BR_* values; rather use new switchdev attr ID for
ageing_time.

v1->v2: rebase w/ net-next
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agorocker: handle setting bridge ageing_time
Scott Feldman [Fri, 9 Oct 2015 02:23:20 +0000 (19:23 -0700)]
rocker: handle setting bridge ageing_time

The FDB cleanup timer will get rescheduled to re-evaluate FDB entries
based on new ageing_time.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobridge: push bridge setting ageing_time down to switchdev
Scott Feldman [Fri, 9 Oct 2015 02:23:19 +0000 (19:23 -0700)]
bridge: push bridge setting ageing_time down to switchdev

Use SWITCHDEV_F_SKIP_EOPNOTSUPP to skip over ports in bridge that don't
support setting ageing_time (or setting bridge attrs in general).

If push fails, don't update ageing_time in bridge and return err to user.

If push succeeds, update ageing_time in bridge and run gc_timer now to
recalabrate when to run gc_timer next, based on new ageing_time.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoswitchdev: skip over ports returning -EOPNOTSUPP when recursing ports
Scott Feldman [Fri, 9 Oct 2015 02:23:18 +0000 (19:23 -0700)]
switchdev: skip over ports returning -EOPNOTSUPP when recursing ports

This allows us to recurse over all the ports, skipping over unsupporting
ports.  Without the change, the recursion would stop at first unsupported
port.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoswitchdev: add bridge ageing_time attribute
Scott Feldman [Fri, 9 Oct 2015 02:23:17 +0000 (19:23 -0700)]
switchdev: add bridge ageing_time attribute

Setting the stage to push bridge-level attributes down to port driver so
hardware can be programmed accordingly.  Bridge-level attribute example is
ageing_time.  This is a per-bridge attribute, not a per-bridge-port attr.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotcp: change type of alive from int to bool
Richard Sailer [Fri, 9 Oct 2015 00:41:37 +0000 (02:41 +0200)]
tcp: change type of alive from int to bool

The alive parameter of tcp_orphan_retries, indicates
whether the connection is assumed alive or not.
In the function and all places calling it is used as a boolean value.

Therefore this changes the type of alive to bool in the function
definition and all calling locations.

Since tcp_orphan_tries is a tcp_timer.c local function no change in
any other file or header is necessary.

Signed-off-by: Richard Sailer <richard@weltraumpflege.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobridge: allow adding of fdb entries pointing to the bridge device
Roopa Prabhu [Thu, 8 Oct 2015 17:38:52 +0000 (10:38 -0700)]
bridge: allow adding of fdb entries pointing to the bridge device

This patch enables adding of fdb entries pointing to the bridge device.
This can be used to propagate mac address of vlan interfaces
configured on top of the vlan filtering bridge.

Before:
$bridge fdb add 44:38:39:00:27:9f dev bridge
RTNETLINK answers: Invalid argument

After:
$bridge fdb add 44:38:39:00:27:9f dev bridge

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotcp: fix RFS vs lockless listeners
Eric Dumazet [Thu, 8 Oct 2015 18:16:48 +0000 (11:16 -0700)]
tcp: fix RFS vs lockless listeners

Before recent TCP listener patches, we were updating listener
sk->sk_rxhash before the cloning of master socket.

children sk_rxhash was therefore correct after the normal 3WHS.

But with lockless listener, we no longer dirty/change listener sk_rxhash
as it would be racy.

We need to correctly update the child sk_rxhash, otherwise first data
packet wont hit correct cpu if RFS is used.

Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Willem de Bruijn <willemb@google.com>
Cc: Tom Herbert <tom@herbertland.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'dsa-next'
David S. Miller [Sun, 11 Oct 2015 12:28:57 +0000 (05:28 -0700)]
Merge branch 'dsa-next'

Vivien Didelot says:

====================
net: dsa: push switchdev prepare phase in FDB ops

This patchset pushes the switchdev prepare phase for the FDB add and del
operations down to the DSA drivers. Currently only mv88e6xxx is affected.

Since the dump requires a bit of refactoring in the driver, it'll come in a
future patchset.

Changes in v2:
 * forward declare switchdev structs instead of fixing the dsa.h include.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: use switchdev obj in port_fdb_del
Vivien Didelot [Thu, 8 Oct 2015 15:35:14 +0000 (11:35 -0400)]
net: dsa: use switchdev obj in port_fdb_del

For consistency with the FDB add operation, propagate the
switchdev_obj_port_fdb structure in the DSA drivers.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: push prepare phase in port_fdb_add
Vivien Didelot [Thu, 8 Oct 2015 15:35:13 +0000 (11:35 -0400)]
net: dsa: push prepare phase in port_fdb_add

Now that the prepare phase is pushed down to the DSA drivers, propagate
it to the port_fdb_add function.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: add port_fdb_prepare
Vivien Didelot [Thu, 8 Oct 2015 15:35:12 +0000 (11:35 -0400)]
net: dsa: add port_fdb_prepare

Push the prepare phase for FDB operations down to the DSA drivers, with
a new port_fdb_prepare function. Currently only mv88e6xxx is affected.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: encx24j600: Fix typos in Kconfig
Jon Ringle [Thu, 8 Oct 2015 15:10:19 +0000 (11:10 -0400)]
net: encx24j600: Fix typos in Kconfig

Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetoot...
David S. Miller [Sun, 11 Oct 2015 12:15:30 +0000 (05:15 -0700)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: bluetooth-next 2015-10-08

Here's another set of Bluetooth & 802.15.4 patches for the 4.4 kernel.

802.15.4:
 - Many improvements & fixes to the mrf24j40 driver
 - Fixes and cleanups to nl802154, mac802154 & ieee802154 code

Bluetooth:
 - New chipset support in btmrvl driver
 - Fixes & cleanups to btbcm, btmrvl, bpa10x & btintel drivers
 - Support for vendor specific diagnostic data through common API
 - Cleanups to the 6lowpan code
 - New events & message types for monitor channel

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoBNX2: fix a Null Pointer for stats_blk
wangweidong [Thu, 8 Oct 2015 10:03:47 +0000 (18:03 +0800)]
BNX2: fix a Null Pointer for stats_blk

we have two processes to do:
P1#: ifconfig eth0 down; which will call bnx2_close, then will
, and set Null to stats_blk
P2#: ifconfig eth0; which will call bnx2_get_stats64, it will
use stats_blk.
In one case:
    --P1#--                   --P2#--
                              stats_blk(no null)
    bnx2_free_mem
    ->bp->stats_blk = NULL
                              GET_64BIT_NET_STATS

then it will cause 'NULL Pointer' Problem.
it is as well with 'ethtool -S ethx'.

Allocate the statistics block at probe time so that this problem is
impossible

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: synack packets can be attached to request sockets
Eric Dumazet [Thu, 8 Oct 2015 12:01:55 +0000 (05:01 -0700)]
net: synack packets can be attached to request sockets

selinux needs few changes to accommodate fact that SYNACK messages
can be attached to a request socket, lacking sk_security pointer

(Only syncookies are still attached to a TCP_LISTEN socket)

Adds a new sk_listener() helper, and use it in selinux and sch_fq

Fixes: ca6fb0651883 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported by: kernel test robot <ying.huang@linux.intel.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Eric Paris <eparis@parisplace.org>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agocxgb4: Enhance driver to update FW, when FW is too old
Hariprasad Shenai [Thu, 8 Oct 2015 04:38:23 +0000 (10:08 +0530)]
cxgb4: Enhance driver to update FW, when FW is too old

t4_check_fw_version() can return several error codes (-EINVAL, -EBUSY,
-EAGAIN). The present code sets the adapter state to UNINIT only if its
an EFAULT. In all the error cases set the adapter to uninitialized state.

In t4_check_fw_version() if call to t4_get_fw_version() fails, repeat the
operation a few times before returning failure.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: fix cb access in socket filter programs
Alexei Starovoitov [Wed, 7 Oct 2015 17:55:41 +0000 (10:55 -0700)]
bpf: fix cb access in socket filter programs

eBPF socket filter programs may see junk in 'u32 cb[5]' area,
since it could have been used by protocol layers earlier.

For socket filter programs used in af_packet we need to clean
20 bytes of skb->cb area if it could be used by the program.
For programs attached to TCP/UDP sockets we need to save/restore
these 20 bytes, since it's used by protocol layers.

Remove SK_RUN_FILTER macro, since it's no longer used.

Long term we may move this bpf cb area to per-cpu scratch, but that
requires addition of new 'per-cpu load/store' instructions,
so not suitable as a short term fix.

Fixes: d691f9e8d440 ("bpf: allow programs to write to certain skb fields")
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'net-non-modular'
David S. Miller [Fri, 9 Oct 2015 14:52:35 +0000 (07:52 -0700)]
Merge branch 'net-non-modular'

Paul Gortmaker says:

====================
make non-modular code explicitly non-modular

[v2: drop m68k patches that Geert converted to modules; add one ARM
 driver patch ; update net-next baseline to today; switch to ARM
 for build testing.]

In a previous merge window, we made changes to allow better
delineation between modular and non-modular code in commit
0fd972a7d91d6e15393c449492a04d94c0b89351 ("module: relocate module_init
from init.h to module.h").  This allows us to now ensure module code
looks modular and non-modular code does not accidentally look modular
just to avoid suffering build breakage.

Here we target code that is, by nature of their Makefile and/or
Kconfig settings, only available to be built-in, but implicitly
presenting itself as being possibly modular by way of using modular
headers, macros, and functions.

The goal here is to remove that illusion of modularity from these
files, but in a way that leaves the actual runtime unchanged.
In doing so, we remove code that has never been tested and adds
no value to the tree.  And we continue the process of expecting a
level of consistency between the Kconfig/Makefile of code and the
code in use itself.

Fortuntately the net subsystem has relatively few instances, given
the overall amount of code and drivers it contains.  For comparison
there are over 300 instances tree wide, resulting in a possible net
removal of on the order of 5000 lines of unused code.

Build tested on net-next from today, on ARM, since that is the arch
where the one ethernet driver changed here is available.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers/net/ethernet: make ti/cpsw-phy-sel.c explicitly non-modular
Paul Gortmaker [Wed, 7 Oct 2015 21:27:46 +0000 (17:27 -0400)]
drivers/net/ethernet: make ti/cpsw-phy-sel.c explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/net/ethernet/ti/Kconfig:config TI_CPSW_PHY_SEL
drivers/net/ethernet/ti/Kconfig:        bool "TI CPSW Switch Phy sel Support"

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modularity so that when reading the
driver there is no doubt it is builtin-only.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Varka Bhadram <varkabhadram@gmail.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/sched: make sch_blackhole.c explicitly non-modular
Paul Gortmaker [Wed, 7 Oct 2015 21:27:45 +0000 (17:27 -0400)]
net/sched: make sch_blackhole.c explicitly non-modular

The Kconfig currently controlling compilation of this code is:

net/sched/Kconfig:menuconfig NET_SCHED
net/sched/Kconfig:      bool "QoS and/or fair queueing"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.  We can
change to one of the other priority initcalls (subsys?) at any later
date, if desired.

We also delete the MODULE_LICENSE tag since all that information
is already contained at the top of the file in the comments.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/dcb: make dcbnl.c explicitly non-modular
Paul Gortmaker [Wed, 7 Oct 2015 21:27:44 +0000 (17:27 -0400)]
net/dcb: make dcbnl.c explicitly non-modular

The Kconfig currently controlling compilation of this code is:

net/dcb/Kconfig:config DCB
net/dcb/Kconfig:        bool "Data Center Bridging support"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.  We can
change to one of the other priority initcalls (subsys?) at any later
date, if desired.

We also delete the MODULE_LICENSE tag etc. since all that information
is (or is now) already contained at the top of the file in the comments.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Anish Bhatt <anish@chelsio.com>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Shani Michaeli <shanim@mellanox.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/core: make sock_diag.c explicitly non-modular
Paul Gortmaker [Wed, 7 Oct 2015 21:27:43 +0000 (17:27 -0400)]
net/core: make sock_diag.c explicitly non-modular

The Makefile currently controlling compilation of this code lists
it under "obj-y" ...meaning that it currently is not being built as
a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.  We can
change to one of the other priority initcalls (subsys?) at any later
date, if desired.

We can't remove module.h since the file uses other module related
stuff even though it is not modular itself.

We move the information from the MODULE_LICENSE tag to the top of the
file, since that information is not captured anywhere else.  The
MODULE_ALIAS_NET_PF_PROTO becomes a no-op in the non modular case, so
it is removed.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Craig Gallek <kraig@google.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'net-bool'
David S. Miller [Fri, 9 Oct 2015 14:49:08 +0000 (07:49 -0700)]
Merge branch 'net-bool'

Yaowei Bai says:

====================
net: small improvement

This patchset makes several functions in net return bool to improve
readability and/or simplicity because these functions only use one
or zero as their return value.

No functional changes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/core: lockdep_rtnl_is_held can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:29:02 +0000 (21:29 +0800)]
net/core: lockdep_rtnl_is_held can be boolean

This patch makes lockdep_rtnl_is_held return bool due to this
particular function only using either one or zero as its return
value.

In another patch lockdep_is_held is also made return bool.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/inetdevice: bad_mask can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:29:01 +0000 (21:29 +0800)]
net/inetdevice: bad_mask can be boolean

This patch makes bad_mask return bool due to this particular function
only using either one or zero as its return value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/inetdevice: inet_ifa_match can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:29:00 +0000 (21:29 +0800)]
net/inetdevice: inet_ifa_match can be boolean

This patch makes inet_ifa_match return bool due to this
particular function only using either one or zero as its return
value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/dccp: dccp_bad_service_code can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:28:59 +0000 (21:28 +0800)]
net/dccp: dccp_bad_service_code can be boolean

This patch makes dccp_bad_service_code return bool due to these
particular functions only using either one or zero as their return
value.

dccp_list_has_service is also been made return bool in this patchset.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/dccp: dccp_list_has_service can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:28:58 +0000 (21:28 +0800)]
net/dccp: dccp_list_has_service can be boolean

This patch makes dccp_list_has_service return bool due to this
particular function only using either one or zero as its return
value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/can: can_dropped_invalid_skb can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:28:57 +0000 (21:28 +0800)]
net/can: can_dropped_invalid_skb can be boolean

This patch makes can_dropped_invalid_skb return bool due to this
particular function only using either one or zero as its return
value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/nfnetlink: lockdep_nfnl_is_held can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:28:56 +0000 (21:28 +0800)]
net/nfnetlink: lockdep_nfnl_is_held can be boolean

This patch makes lockdep_nfnl_is_held return bool to improve
readability due to this particular function only using either
one or zero as its return value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/ieee80211: ieee80211_is_* can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:28:55 +0000 (21:28 +0800)]
net/ieee80211: ieee80211_is_* can be boolean

This patch makes ieee80211_is_* return bool to improve
readability due to these particular functions only using either
one or zero as their return value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/netlink: lockdep_genl_is_held can be boolean
Yaowei Bai [Thu, 8 Oct 2015 13:28:54 +0000 (21:28 +0800)]
net/netlink: lockdep_genl_is_held can be boolean

This patch makes lockdep_genl_is_held return bool to improve
readability due to this particular function only using either
one or zero as its return value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>